The new regulations for MSA definitions state basically that an outlying county is
included if at least 25 percent of the "employed residents" work in the central
county or counties (those counties with over 50 percent of the population in the urbanized
area). Obviously the county-to-county commuting numbers provide the number of residents
working in the central counties. However the "employed residents" is less
clear. Is it from the same source (Apples and Apples) and thereby excluding those not at
work during the reference week, or is it taken from SF3 (Apples and Oranges) and thus
"total" resident employment? We have a county that is 25.03% by the first
method and 24.73% by the second. In or out?